基于压降型pwm开关电源的建模、仿真和减少传导性电磁干扰--外文翻译

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1、Modeling,Simulation,andReductionofConductedElectromagneticInterferenceDuetoaPWMBuckTypeSwitchingPowerSupplyA.Farhadihttp://10.11.24&20:8000/rewritei7EIAbstract：UndesiredgenerationofradiatedorconductedenergyinelectricalsystemsiscalledElectromagneticInterference(EMI).Highspeedswitchingfrequencyinpower

2、electronicsconvertersespeciallyinswitchingpowersuppliesimprovesefficiencybutleadstoEMI.Differentkindofconductedinterference,EMIregulationsandconductedEMImeasurementareintroducedinthispaper.CompliancywithnationalorinternationalregulationiscalledElectromagneticCompatibility(EMC).Powerelectronicsystems

3、producersmustregardEMC・ModelingandsimulationisthefirststepofEMCevaluation.EMIsimulationresultsduetoaPWMBucktypeswitchingpowersupplyarepresentedinthispaper.ToimproveEMC，sometechniquesareintroducedandtheireffectivenessprovedbysimulation.IndexTerms：Conducted,EMC,EMI,LISN,SwitchingSupplyI.INTRODUCTIONFA

4、STsemiconductorsmakeitpossibletohavehighspeedandhighfrequencyswitchinginpowerelectronicsHighspeedswitchingcausesweightandvolumereductionofequipment,butsomeunwantedeffectssuchasradiofrequencyinterferenceappeared⑵.Compliancewithelectromagneticcompatibility(EMC)regulationsisnecessaryforproducerstoprese

5、nttheirproductstothemarkets.ItisimportanttotakeEMCaspectsalreadyindesignphase川.ModelingandsimulationisthemosteffectivetooltoanalyzeEMCconsiderationbeforedevelopingtheproducts.Alotofthepreviousstudiesconcernedthelowfrequencyanalysisofpowerelectronicscomponents⑷®.Differenttypesofpowerelectronicsconver

6、tersarecapabletobeconsideredassourceofEMI.TheycouldpropagatetheEMIinbothradiatedandconductedforms.LineImpedanceStabilizationNetwork(LISN)isrequiredformeasurementandcalculationofconductedinterferencelevel⑷.InterferencespectrumattheoutputofLISNisintroducedastheEMCevaluationcriterion〔」Nationalorinterna

7、tionalregulationsarethereferencestorthe・・・・・[7][8]evaluationofequipmentinpointofviewofEMC•ILSOURCE,PATHANDVICTIMOFEMIUndcsircdvoltageorcurrentiscalledinterferenceandtheircauseiscalledinterferencesourc